Here is an interesting concept for an advanced model railway:

https://banburyconnections.weebly.com/

I happened to spot the layout described in the Jan '18 issue of UK Railway Modeller which led to the above site. What a fantastic enterprise. The only issue being I can't see anywhere on the site detailed track plans of the individual sections just the schematic which shows how the network is joined together. Building this in TMR/TANE could be a nice challenge...